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80220101 = 1348712671
BaseRepresentation
bin1001100100000…
…00111111000101
312120221121021212
410302000333011
5131014020401
611543221205
71662600563
oct462007705
9176847255
1080220101
1141311605
1222a47805
1313809620
14a922a33
157098dbb
hex4c80fc5

80220101 has 8 divisors (see below), whose sum is σ = 86575104. Its totient is φ = 73891440.

The previous prime is 80220089. The next prime is 80220121. The reversal of 80220101 is 10102208.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80220101 - 218 = 79957957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80220121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5 + ... + 12666.

It is an arithmetic number, because the mean of its divisors is an integer number (10821888).

Almost surely, 280220101 is an apocalyptic number.

It is an amenable number.

80220101 is a deficient number, since it is larger than the sum of its proper divisors (6355003).

80220101 is a wasteful number, since it uses less digits than its factorization.

80220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13171.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 80220101 is about 8956.5674786717. The cubic root of 80220101 is about 431.2817371868.

Adding to 80220101 its reverse (10102208), we get a palindrome (90322309).

The spelling of 80220101 in words is "eighty million, two hundred twenty thousand, one hundred one".

Divisors: 1 13 487 6331 12671 164723 6170777 80220101